I really liked your game as did many others, i don't want to be rude or ask something that seems to be rude to me anyway but i was wondering about the true ending She let you go. I like games like this because people like Akano interest me in the sense that i would like to know what there thinking in these moments. While getting the ending though i was still confused as to why Akano enjoyed hurting people. Although i think you may just want it to be up to peoples interpretation and use there imagination for what Alva's relation is to Akano and why he kills but I wanted to ask your initial thoughts on why he does it and maybe some info on him and his only friend. If you don't mind then please explain to me your own thoughts, if you do i sorry and don't feel obligated to do so, thanks and i really enjoyed the game.
Thanks so much for your curiosity! I'll try to answer those questions for you.
Akano doesn't really have a deep reason for killing the people he does, he just heavily enjoys the colour of people's blood. If I had to give him a specific reason, however, I'd say he does it because he feels lonely. He has no real friends and therefore forcefully takes people to give him company, however he knows they aren't truly his friends; making him kill them.
Alva is another girl he kidnapped, but he didn't realise that she was also a demon. He kept her for a month before she tried to leave, causing him to feel betrayed and stab her. Alva, being a demon, didn't die from this and decided to stay with him to assist him with his killings.
That's a short description of it all. If I ever continue Akano or Alva's story in some form, I'll be sure to develop on this backstory.